https://unix.stackexchange.com/a/188222/32478

I have much better experience in using an ssh tunnel to route traffic through another machine. It's very easy to set up since you have ssh access anyway. In a terminal on your computer, type

ssh -vv -ND 8080 user@yourserver

Keep this window open and watch it delivering some verbose messages about the data flowing through the tunnel.

In firefox, go to Preferences -> Advanced -> Network -> Connection: Settings.

Select Manual proxy configuration and add a SOCKS v5 proxy:

 SOCKS Host:   localhost    Port 8080

Check your new IP by navigating to e.g. http://whatismyipaddress.com/.

You can use a firefox add-on like foxy proxy to dynamically switch proxies.